That being said, if you find yourself without a ZAGGsparq, the video below teaches you how to charge your smartphone with fire. Of course, you’ll need to buy a part first (about $10 on Amazon). We should note that you probably should not attempt this unless you have some experience with electrical wires and a fire extinguisher nearby.

Or you could just get a ZAGGsparq, and never worry about battery life again. Anyway, here’s the video: